﻿/*
**  PairCallback类
*/
if (!$.Engine.Collision || typeof $.Engine.Collision === "undefined") $.Engine.Collision = {};
$.Engine.Collision.PairCallback = function () { }
Object.extend($.Engine.Collision.PairCallback.prototype, {
  PairAdded: function (proxyUserData1, proxyUserData2) { return null },
  PairRemoved: function (proxyUserData1, proxyUserData2, pairUserData) { }
});

